Basic concept is that this is the extra ship (a small one) that crashes in the desert. There's only one alien on it, and he/she/it may or may not be "drunk" or alien equivalent, batshit crazy, hurt, etc. Whatever works. The song starts with the ship flying and then goes into the crash. Obvious parallel to the ZL plane crash. May want to have a "crash motif" we reuse across both songs.
(four on the floor, techno style, bass drum only. acoustic)
then bring in acoustic gtr line, eighth notes, down pick only. zombie notes...
then add electric guitar, same feel and rhythm...
from totally silent, bring up the Thor organ patch, starting on the sine wave side and morphing as it builds to the square wave. Organ is playing at least a four note chord, perhaps five. The root of the song key is not the bass note on the chord, but something that leads into it. (Kiefer is good at those puzzles).
Guitars start to coalesce from pure Zombie notes into something more in line with the key and the motifs of the song.
Wham. Full drums break in and everybody drops into the key, the organ backs off to a more normal patch and moves up to more of a right hand position and the bass comes in to fill in.
Possible places to go next:
1) halftime melodic bit (like a switch from the noise of the engine room to an exterior shot of the ship). a la great gig in the sky
2) alien-infected variation on "Blues in the dark" (used for the tenor sax duel in Kansas City). No idea if we can even pull that off, but it would kick ass
3) Keep going. Don't drop into key but just keep adding stuff, 4 or 8 measures at a time (urgent tense quarter note sirens, for example) but maybe try to structure it overall so that it has some harmonic coherency... like take a cool progression and stretch it way out to four measures per chords and add lots of zombal melodies that traverse the chords). No idea if you'd sing for this one or not...